![]() ![]() Means the valve is closed and no exhaust gas is flowing into the intake air stream. The position of the exhaust gas recirculation valve expressed as a percentage of full travel. (SPN 21 & SPN 1207 are not to be used – obsolete)Įngine Extended Crankcase Blow-by Pressureĭifferential crankcase blow-by pressure as measured through a tube with a venturi.Įngine Exhaust Gas Recirculation 1 Valve Position Temperature of the engine electronic control unit. See also SPN 109 for alternate range and resolution. ![]() Gage pressure of liquid found in engine cooling system. SeeĮngine Coolant Pressure 1 (Extended Range) Engine Fuel Filter Differential Pressure (see also SPN 1382)ĭifferential pressure measured across the fuel filter located between the fuel tank and the supply pump. ![]()
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February 2023
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